Commit 753a0f61 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'locking_urgent_for_v6.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull locking fix from Borislav Petkov:

 - Make sure the new futex phash is not copied during fork in order to
   avoid a double-free

* tag 'locking_urgent_for_v6.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Initialize futex_phash_new during fork().
parents dfba48a7 a24cc6ce

include/linux/futex.h

+1 −0
Original line number Diff line number Diff line
@@ -89,6 +89,7 @@ void futex_hash_free(struct mm_struct *mm); 
static inline void futex_mm_init(struct mm_struct *mm)

{

	RCU_INIT_POINTER(mm->futex_phash, NULL);

	mm->futex_phash_new = NULL;

	mutex_init(&mm->futex_hash_lock);

}